Add github actions

.github/workflows/build.yml

@@ -0,0 +1,77 @@
+name: Build Workflow
+
+on: [push, pull_request]
+
+jobs:
+  build-windows:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Install Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: '3.7'
+          architecture: 'x64'
+      - name: Install requirements
+        run: |
+          pip3 install -r requirements_build.txt
+          pip3 install -e .
+      - name: Run PyInstaller
+        run: |
+          python3 -m PyInstaller.__main__ -F -w -n ESPHome-Flasher -i icon.ico esphomeflasher\__main__.py
+      - name: See dist directory
+        run: ls dist
+      - uses: actions/upload-artifact@master
+        with:
+          name: Windows
+          path: dist
+
+  build-ubuntu:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Install Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: '3.7'
+          architecture: 'x64'
+      - name: Install requirements
+        run: |
+          pip3 install -r requirements_build.txt
+          pip3 install -e .
+      - name: Run PyInstaller
+        run: |
+          python3 -m PyInstaller.__main__ -F -w -n ESPHome-Flasher -i icon.ico esphomeflasher/__main__.py
+      - name: See dist directory
+        run: ls dist
+      - uses: actions/upload-artifact@master
+        with:
+          name: Ubuntu
+          path: dist
+
+
+  build-macos:
+    runs-on: macOS-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Install Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: '3.7'
+          architecture: 'x64'
+      - name: Install requirements
+        run: |
+          pip3 install -r requirements_build.txt
+          pip3 install -e .
+      - name: Run PyInstaller
+        run: |
+          python3 -m PyInstaller.__main__ -F -w -n ESPHome-Flasher -i icon.icns esphomeflasher/__main__.py
+      - name: See dist directory
+        run: ls dist
+      - uses: actions/upload-artifact@master
+        with:
+          name: MacOS
+          path: dist

requirements_build.txt

@@ -0,0 +1,4 @@
+wxpython>=4.0,<5.0
+esptool==2.8
+requests>=2.0,<3
+pyinstaller